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Network Support Division
CITS®21 Caller Identification
Test Set
Technical Manual
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Manual
No part of this publication may be reproduced, stored on a retrieval system, or transmitted, in any form or by any means electronic,
mechanical, photocopying, recording, or otherwise, without the prior written permission of Harris Corporation. The use of
trademarks or other designations is for reference purposes only.
NOTICE
Harris Corporation makes no warranties about this document. Harris Corporation reserves the right to make hardware and software
changes to the product described within this document without prior notice and without obligation to notify any person of such
revision or change.
TRADEMARKS
CITS21 is a registered trademark of Harris Corporation.
REGULATORY INFORMATION
WARNING: This equipment generates, uses, and can radiate radio frequency energy, and, if not installed and used in accordance
with the installation manual, may cause interference to radio communications. It has been tested and found to comply with the limits
for a Class A digital device pursuant to Part 15, Subpart J of the FCC rules, which are designed to provide reasonable protection
against such interference when operated in a commercial environment. Operation of the equipment in a residential area is likely to
cause interference, in which case the user, at his own expense, will be required to take whatever measures may be required to correct the interference.
Network Support Division | 809 Calle Plano | Camarillo, CA 93012-8519 USA
www.harris.com 1-800-437-2266
next level solutions
ii
©1993 Harris Corporation
Written/Printed in USA. 0II-726005-001, Issue 5, August 2000
Contents
■
■
General Information
Description
■
■
■
■
■
■
1
1
Physical Characteristics
1
Controls and Indicators
3
■
LCD Display
3
■
Status and Error Message
3
■
Recall Button
4
Accessories
Connections
Operation
4
4
7
■
Procedure
7
■
Last Message Display
8
■
AC Termination Mode
8
Maintenance
8
■
Battery Replacement
8
■
Cleaning the Housing
9
■
Warranty
9
■
Return or Repair of Equipment
10
■
Ordering Information
10
■
Specifications
11
iii
General Information
WARNING:
Good safety practices prohibit the connection of the CITS®21 and similar test sets to
117 Volts AC commercial electrical power. Should the unit be connected to commercial
power, all warranties are immediately voided.
The Harris Caller Identification Test Set (CITS®21) employs the latest
technology in integrated circuit design to provide caller identification to the
telephone craftsperson. The CITS21, which can be carried on a
technician’s belt, also provides for last call memory and display. The
compact, battery-powered CITS21 is designed for use in both the inside
and outside plant environments.
Description
Physical Characteristics
The physical characteristics of the CITS21 are shown in Figure 1.
The housing (A) is injection molded of high impact polycarbonate. The
case is designed to meet basic outside plant environmental requirements
of humidity, altitude and rain.
CITS ® 21 Caller Identification Test Set
1
The LCD display (B) has two rows with 16 positions each, for displaying
complete incoming telephone number, time of day and directory name of
calling party.
The recall button (C) allows for activating the LCD display to display the last
message retained.
The female RJ-11 jack (D) allows for attaching a line cord or external clip
with male RJ-11 plug on one end. A rubber plug is attached (not shown), to
be inserted into the jack for protection from weather when the unit is not in
use.
The battery compartment (E), accessed from the back of the case, houses
the battery which powers the unit. The battery compartment is opened by
loosening the screw with a small slotted screwdriver.
The belt clip (F) allows for convenient attachment to a craftsperson’s belt.
B
C
FRONT
VIEW
A
D
F
E
REAR
VIEW
cits_001
Figure 1. Physical Characteristics
2
CITS ® 21 Caller Identification Test Set
Controls and Indicators
LCD Display
The CITS21 is capable of displaying the complete incoming telephone
number, date, time, and name of calling party. For areas offering number
only service, the CITS21 will automatically detect and switch to that format
to display: complete incoming telephone number, date, and time. The unit
displays this information in a 2 x 16 (2 row by 16 position) LCD panel. The
message is displayed for 10 seconds.
Status and Error Message
"*Ring*". This message is displayed when the first ring signal from a call is
received. It is not displayed on subsequent rings.
"Caller ID Data Not Present". This message is displayed if Caller ID data
was not sent between the first and second rings. This could indicate that
the Caller ID service has not been activated for the line under test.
"*** Error *** Corrupted Data". This message is displayed if some of the
Caller ID data was not received correctly. This message could indicate
problems with the transmission characteristics of the line such as excessive
noise, taps, loading coil anomalies, or incorrect signal levels.
"Missing or Unexpected Data". This message is displayed if the Caller ID
data is interrupted or excessive line noise is present during data
transmission.
"Unable to Sync - Noisy Line". This message is displayed if the CITS21 is
unable to acquire data due to the presence of severe line noise.
"*Privacy*". This message is displayed if the calling party has blocked
Caller ID data for privacy concerns.
"*Out of Area*". This message is displayed if the calling party resides
outside the Caller ID service area.
"*AC Termination Disabled*". This confirmation message is displayed
after the user has configured the CITS21 not to apply an AC termination
impedance during data reception. If configured as such, this message is
also displayed during ringing with the "*Ring*" message.
"*AC Termination Enabled*". This confirmation message is displayed
after the user has configured the CITS21 to apply an AC termination
impedance during data reception.
CITS ® 21 Caller Identification Test Set
3
Recall Button
After the 10 second message display, the CITS21 powers down for battery
conservation. The last message remains in memory. Pressing the recall
button re-activates the LCD Display, and displays the last data retained, as
long as sufficient battery charge is available. The recall button will also
activate display of a secondary screen to display directory name
information. If the recall button is pressed and held for more than 5
seconds, the AC Termination mode will be toggled (enabled or disabled).
Accessories
A 9 Volt alkaline battery (NEDA 1604A) is included.
Optional accessories (see Table 1) are available and may be ordered by
calling Harris Customer Service at 1-800-437-2266.
Table 1. Accessories
Accessory
Part Number
Line Cord, Modular Plug to Angled Bed-of-Nails Clips
P3224-022
6-Wire Banjo™ Adapter
10220-100
RJ-11 Extension Cord (5 to 6 ft.)
*
RJ-11 Duplex Adapter (RJ-11 Plug to Dual RJ-11 Jacks
*
*Available at any telephone accessory store
Connections
The CITS21 interfaces to Tip and Ring via a standard RJ-11 modular jack.
Figures 2 through 5 show four possible connection configurations.
Connect the CITS21 to a wall jack using a male-to-male RJ-11 cord (see
Figure 2).
Connect the CITS21 to the Tip and Ring of a terminal block using one of the
line cords listed in Optional Accessories (see Figure 3).
4
CITS ® 21 Caller Identification Test Set
cits_002
CITS21
RJ11/RJ11 CORD
WALL JACK
Figure 2. Wall Jack Connection
CITS21
TIP
RING
cits_003
LINECORD
Figure 3. Line Cord to Tip and Ring Connection
CITS ® 21 Caller Identification Test Set
5
Connect the CITS21 and a butt-in test set to the same line, using an in-line
modular adapter (Banjo). Line cord connections are to R (Ring) and G (Tip)
of the adapter. Connect the other end of the adapter to a wall jack using a
male-to-male RJ-11 cord (see Figure 4). The CITS21 will not interfere with
the normal operation of the butt-in test set or circuit under test.
Plug an RJ-11 duplex adapter (RJ-11 plug to dual RJ-11 jacks) into the
CITS21. Using two male-to-male RJ-11 cords, connect one adapter jack to
a wall jack, and the other adapter jack to a subscriber telephone (see
Figure 5).
TO
PU
NE
L SE
CITS21
RJ11/RJ11 CORD
BUTT-IN
TEST SET
MODULAR
ADAPTER
(BANJO)
TIP
RING
cits_004
LINECORD
RJ11/RJ11 CORD
WALL JACK
Figure 4. Connection for Butt-in Test Set
6
CITS ® 21 Caller Identification Test Set
CITS21
RJ11
DUPLEX
ADAPTER
RJ11/RJ11 CORD
RJ11/RJ11 CORD
WALL JACK
SUBSCRIBER
TELEPHONE
cits_005
Figure 5. Connection for Subscriber Telephone
Operation
Procedure
1. Choose a connection configuration as described above and make the
connections.
2. Use the butt-in test set or subscriber telephone to place a call to the Central
Office (CO) or other known number and request a Call Back.
3. Place the butt-in test set in monitor mode, (on-hook), or hang up the
telephone.
A "*RING*" message will be displayed during the first ring.
The main message is then displayed: date, time, and calling number. The
message is displayed for approximately 10 seconds.
CITS ® 21 Caller Identification Test Set
7
If a directory name is sent by the CO, the name can be viewed on a
secondary screen by pressing the recall button. Pressing the recall button
toggles between the primary (date, time, number) and secondary (number,
name) screens. Presence of directory name information is indicated by an
arrow (">") to the right of the calling number.
Last Message Display
Press the recall button. The last message will be displayed for
approximately 10 seconds.
AC Termination Mode
The default status on initial power up (install battery) is for the CITS21 to
apply an AC termination load (650 Ω) across the line during the reception of
data. The load is removed from the line once the Caller ID data is received.
The user can disable the automatic application of this load by holding the
recall button for 5 seconds. The message "AC Termination Disabled" is
displayed as a confirmation and it will also be displayed during the ring
interval as a reminder that the termination will not be applied. To re-enable
the AC termination, the user holds the button for 5 seconds. The message,
"AC Termination Enabled" is displayed, indicating the changed status. This
message is not displayed during the ring interval. The AC termination mode
(enabled or disabled) is toggled each time the button is depressed and held
for 5 seconds. The last setting remains in effect until changed by the user or
the unit's battery is removed.
Maintenance
The CITS21 is designed to meet basic outside plant environmental
requirements, and requires little maintenance. The rubber plug attached to
the case should be inserted into the RJ-11 jack when the unit is not in use.
Battery Replacement
If the display does not appear when the recall button is pressed, the battery
may need replacing. The 9 V Alkaline (NEDA 1604A) battery is accessed
by loosening the screw on the battery compartment with a small slotted
screwdriver.
8
CITS ® 21 Caller Identification Test Set
Cleaning the Housing
Clean housing with nonabrasive soap and water. (Prevent LCD window
from being scratched).
CAUTION:
Do not use CRC Cable Clean® or any similar chlorinated solvent on the CITS21.
Doing so will damage the test set.
Warranty
Harris Corporation warrants that its products are free from defects in
material and workmanship for the following periods:
■
Test Sets – 18 months from date of manufacture.
■
Line Cord and Accessories – 90 days from date of purchase.
This warranty constitutes the sole and exclusive warranty for products sold
by Harris Corporation’s Network Support Division and is in lieu of any other
warranty, express, implied, or statutory, including the warranty of
merchantability and fitness for a particular purpose. In no event shall Harris
be liable for any special, incidental, indirect, or consequential damages
arising out of the use of any product or from any other cause.
This warranty shall not apply to products which have been subjected to
mishandling, abuse, misuse, negligence, or accident, nor to products
which have been modified, altered, or repaired by personnel not authorized
by Harris.
CITS ® 21 Caller Identification Test Set
9
Return or Repair of Equipment
The return of any products for credit, other than for warranty service, is
done at the sole discretion of Harris Corporation. Before any product is
returned, including for warranty service, a Return Authorization (“RA”)
number must be obtained from the Customer Service Department by
calling 1-800-437-2266. If the RA number is not clearly marked on the
shipping label, the package will not be accepted by Harris. All authorized
returns must be shipped, with shipping charges prepaid, f.o.b. destination,
and addressed as follows:
Harris Corporation
Network Support Division
809 Calle Plano
Camarillo, California 93012-8516
United States of America
Attn: Customer Support, RA# xxxxx
Ordering Information
Table 2 lists ordering information for the CITS21.
Table 2. Ordering Information
Description
10
Model Number
CITS21, with Angled Bed-of-Nails Line Cord
26005-009
Replacement Line Cord
P3224-022
6-Wire Banjo™ Adapter
10220-100
CITS ® 21 Caller Identification Test Set
Specifications
Table 3 lists the specifications of the CITS21.
Table 3. Specifications
Parameter
Working Limits
ELECTRICAL
Power Requirements
9 Volt Alkaline Battery (NEDA/ANSI 1604A)
Typical Battery Life
6 Months
DATA RECEPTION INTERFACE
Data Format
Serial, binary, asynch
Mark Frequency
1200 ± 12 Hz
Space Frequency
2200 ± 22 Hz
Received Signal Level 1200
Between -32 and -12.5 dBm
Received Signal Level 2200
Between -36 and -12.5 dBm
Signal to Distortion Ratio
≥ 25 dB
AC Impedance
650 Ω, 1µF (nominal during data reception)
>120 kΩ (idle, or AC Termination Disabled)
Ringer Equivalence No.
0.03B
PHYSICAL
Length
5 5/8 inches
Width
3 7/16 inches
Height
1 1/2 inches
Weight
9 ounces
ENVIRONMENTAL
Temperature
Operating: -25 to +60° C
Storage: -40 to 66° C
Relative Humidity
5 to 95%
Altitude
Up to 10,000 feet
Rain Resistance
RainSafe™
Drop Survival (concrete surface)
6 feet, DropSafe™
Specifications subject to change without notice.
CITS ® 21 Caller Identification Test Set
11
Network Support Division | 809 Calle Plano | Camarillo, CA 93012-8519 USA
www.harris.com 1-800-437-2266
next level solutions
©1993 Harris Corporation
Written/Printed in USA. 0II-726005-001, Issue 5, August 2000